<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">
    <title>my-project</title>
  </head>
    <style>
      body{
        position: fixed;
        margin: 0px;
        padding: 0px;
        width: 100%;
        height: 100%;
      }
    </style>
  <div id="app">
    <router-view></router-view>
  </div>
</html>
